Implantable support attachment system and assembly

ABSTRACT

An attachment assembly configured to secure an implantable support within a patient includes a length of suture, an anchor, a capsule, and a clasp. The suture has a leading end half terminating in a leading end and a trailing end half terminating in a trailing end. The anchor is coupled to the trailing end half of the length of the suture. The capsule is attached to the leading end of the suture and has a through-bore extending longitudinally through the capsule. The clasp is attached to the trailing end of the suture, the clasp attachable to the implantable support.

BACKGROUND

Intracorporeal suturing of tissue during surgery presents challenges tothe surgeon in that the surgeon is called upon to manipulate suturinginstruments within the confines of a relatively small incision formed inthe patient's body.

For example, in some cases a surgeon will place a suture within thepelvis of the patient without actually seeing the suture site. Thechallenge of placing a suture within the pelvic region is compoundedwhen additional support structures are sutured into the pelvic region,for example when the pelvis is reinforced with a mesh-style support toaddress pelvic organ prolapse or urinary incontinence.

Improved suturing instruments and improved methods of deliveringintracorporeal sutures would be welcomed by the surgical staff.

SUMMARY

One aspect provides an attachment assembly configured to secure animplantable support within a patient. The attachment assembly includes alength of suture, an anchor, a capsule, and a clasp. The suture has aleading end half terminating in a leading end and a trailing end halfterminating in a trailing end. The anchor is coupled to the trailing endhalf of the length of the suture. The capsule is attached to the leadingend of the suture and has a through-bore extending longitudinallythrough the capsule. The clasp is attached to the trailing end of thesuture, the clasp attachable to the implantable support.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of embodiments and are incorporated in and constitute apart of this specification. The drawings illustrate embodiments andtogether with the description serve to explain principles ofembodiments. Other embodiments and many of the intended advantages ofembodiments will be readily appreciated as they become better understoodby reference to the following detailed description. The elements of thedrawings are not necessarily to scale relative to each other. Likereference numerals designate corresponding similar parts.

FIG. 1 is a schematic view of one embodiment of an implantable supportattachment system including a suture thrower and a suture attachmentassembly.

FIG. 2 is a schematic side view of one embodiment of the suture throwerillustrated in FIG. 1.

FIG. 3 is a cross-sectional view of a handle of the suture throwerillustrated in FIG. 2.

FIG. 4 is a perspective view of a shaft of the suture throwerillustrated in FIG. 2.

FIG. 5 is a cross-sectional view of a suture head of the suture throwerillustrated in FIG. 2.

FIG. 6 is a cross-sectional view of one embodiment of a capsule of thesuture attachment assembly illustrated in FIG. 1.

FIG. 7A is a perspective view, FIG. 7B is a front view, and FIG. 7C is aside view of one embodiment of a clasp of the suture attachment assemblyillustrated in FIG. 1.

FIG. 8A is a schematic view of the suture head of the suture throwerengaged with intracorporeal tissue.

FIG. 8B is a schematic view of a needle of the suture had forming anopening in the intracorporeal tissue.

FIG. 8C is a schematic view of the needle engaged with a through-bore ofthe capsule and pulling the capsule and the suture through the openingformed in the intracorporeal tissue.

FIG. 8D is a schematic view of the capsule in the clasp located outsideof the body with the clasp secured to the implantable support.

FIG. 8E is a schematic view of the anchor engaged with the back side ofthe intracorporeal tissue and the implantable support secured relativeto the intracorporeal tissue T.

FIGS. 8F-8I are schematic views of embodiments of the suture attachmentassembly employed to place another implantable fabric intointracorporeal tissue.

FIG. 9 is a schematic view of an implantable support attachment systemincluding the suture attachment assembly illustrated in FIG. 1 and oneembodiment of a suture thrower.

FIG. 10A is a perspective view, FIG. 10B is a front view, and FIG. 10Cis a side view of one embodiment of a clasp suited for use with thesuture attachment assembly illustrated in FIG. 1.

FIG. 11A is a top view, FIG. 11B is a side view, and FIG. 11C, is aperspective view of one embodiment of a clasp suited for use with thesuture attachment assembly illustrated in FIG. 1.

FIG. 12A is a top view and FIG. 12B is a side view of another embodimentof a suture attachment assembly.

FIG. 13 is a side view of another embodiment of a suture attachmentassembly.

DETAILED DESCRIPTION

In the following Detailed Description, reference is made to theaccompanying drawings, which form a part hereof, and in which is shownby way of illustration specific embodiments in which the invention maybe practiced. In this regard, directional terminology, such as “top,”“bottom,” “front,” “back,” “leading,” “trailing,” etc., is used withreference to the orientation of the Figure(s) being described. Becausecomponents of embodiments can be positioned in a number of differentorientations, the directional terminology is used for purposes ofillustration and is in no way limiting. It is to be understood thatother embodiments may be utilized and structural or logical changes maybe made without departing from the scope of the present invention. Thefollowing detailed description, therefore, is not to be taken in alimiting sense, and the scope of the present invention is defined by theappended claims.

It is to be understood that the features of the various exemplaryembodiments described herein may be combined with each other, unlessspecifically noted otherwise.

Tissue includes soft tissue, which includes dermal tissue, sub-dermaltissue, ligaments, tendons, or membranes. As employed in thisspecification, the term “tissue” does not include bone.

In this specification, end means endmost and end portion means thatsegment that is adjacent to and extends from the end. For example, aproximal end is that end location of a handheld instrument that isnearest a user, and a proximal end portion is that segment (e.g., ahandle of the handheld instrument) that is adjacent to and extendsdistally away from the proximal end.

It is desirable to implant support materials to address pelvicdysfunction. Some systems that are employed to implant support materialsinclude a needle attached to a mesh support by a suture line. The sutureline can include a tapered portion having one segment that is wider thana second statement, or the wider segment is employed as a dilator toforce the tissue open wide enough to accept a portion of the meshsupport. The dilation of the tissue has the potential to undesirablyweaken or traumatize the tissue.

In contrast, embodiments of a suture attachment system and assembly aredescribed herein that obviate the dilation of the tissue and offerimproved implant management that is less complex, or intuitive, and lesscumbersome.

Embodiments provide a suture attachment assembly that is configured tocooperate with a suture thrower to allow a surgeon to secure animplantable support within a patient. The suture attachment assemblyincludes a suture having a clasp opposite a leading end. The clasp isconfigured to quickly engage with the support, obviating the use ofknots. The clasp allows the surgeon to conveniently place (and ifdesired, replace) the clasp onto the support at a location outside ofthe patient's body. The leading end is configured to be directed throughan opening in intracorporeal tissue to pull the clasp/support along inthe wake of the suture. In one embodiment, an anchor of the attachmentassembly is terminated against the intracorporeal tissue to secure theimplantable support at a desired location inside the patient.

In one embodiment, a suture thrower is provided that has a movableneedle that moves in a proximal direction to first form an opening inthe tissue and subsequently capture the capsule, which is retracted bythe needle in the distal direction to allow the surgeon to retrieve thecapsule and the suture attached to the capsule to a location outside ofthe patient's body.

FIG. 1 is a schematic view of one embodiment of an attachment system 20configured to secure an implantable support 22 within a patient. Theattachment system 20 includes a suture attachment assembly 24 and asuture thrower 50. As noted above, the components of the system 20 arenot drawn to scale.

The suture attachment assembly 24 has a clasp 34 that is attachable tothe implantable support 22, for example outside of the patient's body bymeans of a quick connect or other attachment device. The suture 26 ispassed through tissue and retrieved to place the support 22intracorporeally at a desired location within the patient. The sutureattachment assembly 24 includes an anchor 32 that secures the support 22at the desired location after the suture is retrieved through thetissue. The suture thrower 50 cooperates with the suture attachmentassembly 24 to form an opening in the tissue and retrieve the suture 26through the opening formed in the tissue.

The implantable support 22 is sized and configured to reinforce thefloor of the pelvis or support other tissues within the pelvis andsuitably includes nonwoven materials such as autograft material (thepatient's own tissue), allograft material (tissue from a cadaver),xenograft material (tissue from another species), or synthetic materialssuch as woven fabrics or meshes, nonwoven fabrics or meshes, fibrillatedfibers, or spun and/or fibrillated fibers. The support 22 is generallyprovided with voids (pores) that are configured to allow tissue ingrowthinto and through the support 22. The pores of the support 22 aregenerally larger than, on average, about 75 μm.

In one embodiment, the implantable support 22 is a knitted monofilamentpolypropylene mesh having an area of approximately 225 cm² mesh with abasis weight of approximately 21 g/m², a pore size of approximately 1121μm, and a thickness of approximately 260 μm. The mesh is thin and lightweight (i.e., the basis weight is less than approximately 30 g/m²) toprovide a thin and comfortable mesh that is less likely to erode tissuethat contacts the mesh and less likely to be sensed through the tissuelayers by the patient. Other suitable materials for implantable support22 include fabrics formed from polyester, polyethylene, silicone,urethanes, polyurethanes, copolymers, or block copolymers of these orsuitably similar polymeric materials. Suitable polypropylene mesh isavailable from Coloplast Corp., Minneapolis, Minn. Other suitablesupport material is available from, for example, HerniaMesh, Chivasso,Italy.

The suture attachment assembly 24 includes a length of suture 26, acapsule 28 attached to a leading end 30 of the suture 26, an anchor 32coupled to the suture 26, and the clasp 34 attached to a trailing end 36of the suture 26.

In one embodiment, the suture 26 has a leading end half terminating inthe leading end 30 and a trailing end half terminating in the trailingend 36, where the anchor 32 is coupled to the trailing end half of thesuture 26, the capsule 28 is attached to the leading end 30 of thesuture 26, and the clasp 34 is attached to the trailing end 36 of thesuture 26.

In one embodiment, the capsule 28 is a tube having a through-bore 156formed longitudinally through the capsule 28.

The suture thrower 50 includes a shaft 54 coupled between a handle 52and suturing head 56 that houses a movable needle 62. The handle 52 thusdefines a proximal end of the suture thrower 50 and is nearest a user ofthe suture thrower 50. The capsule 28 is sized for retention within adistal end 64 of the suturing head 56 and the clasp 34 trails behind thesuture 26 and is attachable to the implantable support 22.

During use, the handle 52 is activated to drive the needle 62 inaproximal direction to form an opening in intracorporeal tissue (forexample a ligament) and subsequently seat the needle 62 into thethrough-bore 156 to engage the capsule 28. The needle 62 retrieves thecapsule 28 through the opening in the tissue to deliver the leading end30 of the suture 26 outside of the patient. The clasp 34, attached tothe trailing end 36 of the suture 26, is available outside of thepatient and accessible by the surgeon for attachment of the clasp 34 tothe implantable support 22. The clasp 34, by being accessible outside ofthe patient's body, permits the surgeon to more accurately attach thesuture 26/clasp 34 to the implantable support 22 prior to implanting thesupport 22 within the patient. The surgeon pulls on the capsule 28 endof the suture 26 to pull the suture 26 through the tissue and draw theimplantable support 22 into the patient. The clasp 34 moves through theopening in the tissue formed by the needle 62 until the anchor 32engages with the tissue to prevent the implantable support 22 from beingwithdrawn back through the opening, thus intracorporeally placing thesupport 22 in the patient. The surgeon subsequently removes the capsule28 and any excess length of the suture 26 from the patient.

FIG. 2 is a schematic side view of the suture thrower 50. In oneembodiment, handle 52 includes an actuator 58 communicating with a rod60 that is disposed within shaft 54. When actuator 58 is activated, rod60 moves through shaft 54 to extend the needle 62 that is stored withina proximal end portion 112 of head 56 axially outward through tissue andtoward a distal end 64 of head 56. The needle 62 moves away from theuser (who is holding handle 52 at the proximal end of suture thrower 50)toward distal end 64 of suture thrower 50 for engagement with thethrough-bore 156 formed in the capsule 28 (FIG. 1).

In one embodiment, the capsule 28 (FIG. 1) is retained within distal end64 of the head 56 and so positioned to allow the needle 62 tofrictionally engage with the through-bore 156. The needle 62 thus mateswith the capsule 28, removes the capsule 28 from distal end 64, andretracts the capsule into the proximal end portion 112 of head 56. Inthis manner, the suture 26 that is towed behind the capsule 28 is“thrown” through the tissue. Embodiments described below include a guidepin located within head 56 that is configured to disengage the capsule28 from needle 62 after the capsule 28 is delivered to a locationoutside of the patient's body.

Suture thrower 50 is suited for the intracorporeal suturing of tissueduring surgery, and in one embodiment is provided as a steriledisposable surgical instrument that is discarded after the surgicalprocedure. To this end, the components of suture thrower 50 are selectedto be compatible with gas, steam, or radiation sterilization.

FIG. 3 is a cross-sectional view of the handle 52. In one embodiment,handle 52 is aligned with a major longitudinal axis A and includes abody 70 extending between a distal end 72 and a proximal end 74, a thumbbrace 76 extending laterally from body 70, a trigger 78 spaced apartfrom thumb brace 76, and a knob 80 coupled to proximal end 74.

In one embodiment, body 70 is fabricated from plastic, for example viamolding. Suitable plastic materials for the fabrication of body 70,brace 76, and knob 80 include, as examples, polycarbonate, polyethylene,acrylonitrile butadiene styrene, acrylic, or nylon. In one embodiment,brace 76 is integrally molded with a clamshell-style of body 70 andthese two components are joined together to retain trigger 78 and knob80. Trigger 78 is formed to have sufficient strength to resist bendingwhen activated by the human hand. Suitable materials for forming trigger78 include metal such as aluminum or plastics such as polyetherimide orpoly-ether-ether-ketone.

Shaft 54 is coupled to distal end 72 of body 70, and rod 60 is disposedwithin shaft 54 and coupled to trigger 78. In one embodiment, actuator58 includes trigger 78 attached to rod 60 and a spring 82 disposedwithin a spring pusher 84 and biased against and an internal rib 86.Trigger 78 is movable toward thumb brace 76 to move rod 60 in a distaldirection longitudinally within shaft 54, which compresses spring 82.When trigger 78 is released, spring 82 extends to push spring pusher 84proximally, which retracts or returns rod 60 toward proximal end 74.Trigger is spaced apart from thumb brace 76 by a distance ofapproximately 4-12 cm to enable the fingers of the user to comfortablyactivate trigger 78. Trigger 78 is disposed at an angle B relative tothe longitudinal axis A of body 70, and in an exemplary embodiment theangle B is between 70-110 degrees such that trigger 78 is approximatelyorthogonal to longitudinal axis A.

Actuator 58 is configured to move rod 60 forward in a distal directionand rearward in a proximal direction within shaft 54. In one embodiment,it is desirable to move rod 60 rearward an additional distance todisengage the capsule 28 (FIG. 1) from needle 62 (FIG. 2). To facilitatethis, rod 60 includes an insert (not shown) that communicates throughspring pusher 84 and is captured in window 88. When knob 80 is turned,spring pusher 84 turns and the insert attached to rod 60 is retractedback in a proximal direction due to the angle of window 88, whichretracts rod 60 an additional distance into body 70. For example, in oneembodiment knob 80 is configured such that a 180 degree clockwise ofknob 80 relative to end 74 draws rod 60 an additional distance of about2 mm into body 70. Although knob 80 is configured to retract rod 60further into body 70 via a turning motion, other mechanisms such aslevers or draw bars for retracting rod 60 incrementally rearward arealso acceptable.

FIG. 4 is a side view of shaft 54. One suitable embodiment of shaft 54includes a substantially rigid aluminum annular tube extending between aproximal end 90 that is attachable to handle 52 (FIG. 3) and a distalend 92 that is attachable to head 56. Other substantially rigidmaterials, such as stainless steel, are also suitable selections forfabricating shaft 54. Another embodiment of shaft 54 includes a distalend portion associated with distal end 92 that is flexible andconfigured to bend laterally relative to first section 96 to enable thesurgeon to selectively direct head 56 to a desired location.

In one embodiment, the shaft 54 includes the proximal end 90 that isattachable to handle 52 (FIG. 3), the distal end 92 that is attachableto head 56 (FIG. 2), and a crimp 94 or a weld 94 that connects a firstsection 96 to a second section 98. In one embodiment, shaft 54 is formedas a thin-walled tube with first section 96 formed of a first materialand a second section 98 is formed of a different second material. In anexemplary embodiment, first section 96 is formed of 6000 series aluminumand a second section 98 is formed of 3000 series aluminum, with thesetwo metal sections 96, 98 joined together by crimp/weld 94. The 6000series aluminum is selected to have a shear modulus of a sufficientvalue to preclude the user from bending first section 96 as suturethrower 50 is manipulated. For example, in one embodiment the shearmodulus of first section 96 is approximately 30 GN/m². The 3000 seriesaluminum is selected to have a shear modulus of a sufficient value toenable a user to bend the second section 98 with their hands, whichenables the user to shape and guide second section 98 (which is attachedto head 56) in controlling and guiding the placement of sutures withhead 56. For example, in one embodiment the shear modulus of secondsection 98 is approximately 10 GN/m². In another example, in oneembodiment the yield strength of first section 96 is approximately 30GN/m². The 3000 series aluminum is selected to have a yield strength ofa sufficient value to enable a user to bend the second section 98 withtheir hands, which enables the user to shape and guide second section 98(which is attached to head 56) in controlling and guiding the placementof sutures with head 56. For example, in one embodiment the yieldstrength of second section 98 is approximately 10 GN/m².

One example of suitable lengths for sections 96, 98 is for first section96 to have a length between 4-24 cm and second section 98 to have alength from 1-10 cm. Other lengths for sections 96, 98 are alsoacceptable. In one embodiment, crimp/weld 94 is provided as a metalperipheral crimp securing first section 96 to second section 98.

FIG. 5 is a cross-sectional view of head 56. In one embodiment, head 56is formed of two mating components, and the view of FIG. 5 is taken withone half of the structure removed so that the internal features of head56 are visible. Head 56 is molded from plastic, for example from apolyetherimide plastic sold under the trademark Ultem, or fromglass-filled polyetherimide plastics also sold under the trademarkUltem.

In one embodiment, the proximal end portion 112 extends from a proximalend 110 of the head 56 and includes a neck 114 that extends between theproximal end portion 112 and the distal end 64 to form a throat 132 thatis suited for engaging over or around ligament or other tissue. Head 56is attachable to shaft 54, and in one embodiment includes an opening 120sized to receive shaft 54 such that rod 60 extends into proximal endportion 112 and couples with a link 122 that is attached to needle 62.In one embodiment, distal end 64 is not aligned with, but is ratheroffset radially from longitudinal axis A, to more comfortably positionshaft 54 for manipulation by the surgeon as head 56 is engaged withtissue.

In one embodiment, a clevis pin 121 connects a proximal end of link 122to rod 60 and a distal end of link 122 is coupled to needle 62. Movementof rod 60 moves link 122, which moves needle 62 into and out of a needleexit port 123 formed in proximal end portion 112. In one embodiment, atrace 124 that is formed on an interior surface 125 of proximal endportion 112 of head 56, and link 122 is configured to translate androtate within trace 124 to translate needle 62 along axis A and pitchneedle up/down relative to axis A. For example, in one embodiment link122 includes a first pin 126 that couples with clevis 121 and a secondpin 128 that couples with needle 62. Axial movement of rod 60 translatesto axial movement of link 122 and needle 62, and link 122 rotates aboutpins 126, 128 to shunt a path of needle 62 off of axis A.

Link 122 is thus configured to translate within trace 124 to move needle62 in/out relative to needle exit port 123, and rotate relative to pins126, 128 to direct movement of needle 62 up/down relative tolongitudinal axis A. In one embodiment proximal end portion 112 includesa guide pin 130 that defines a bore sized to receive needle 62. Needle62 is configured to slide through the bore formed in guide pin 130, andguide pin 130 is rotatable to allow needle 62 to pitch relative tolongitudinal axis A as needle 62 moves axially, for example as needle 62moves into engagement with distal end 64.

Neck 114 extends between proximal end portion 112 and distal end 64 anddefines the throat 132. Needle 62 is movable from proximal end portion112, out of needle exit port 123, across throat 132, and into a cavity134 formed in distal end 64. Needle 62 is preferably machined from metalsuch as stainless steel or a shape memory alloy such as NiTiNOL (NickelTitanium Naval Ordinance Laboratory), as examples.

In one embodiment, distal end 64 and cavity 134 are both radially spacedaway from longitudinal axis A, and guide pin 130 rotates to enableneedle 62 to move out of the needle exit port 123, pitch upwards, andinto cavity 134. In one embodiment, a top surface of neck 114 defines anopen, exposed groove configured to receive and guide suture that extendsfrom the capsule 28 (FIG. 6) captured in cavity 134 back to handle 52(FIG. 1).

The cavity 134 is configured to retain the capsule 28 attached to suture26 (see FIG. 1), and needle 62 is configured to penetrate tissue andenter cavity 134, engage the capsule 28, and pull the capsule 28 throughthe tissue and into needle exit port 123 to “throw” the suture acrossthroat 132. The guide pin 130 is placed to displace the capsule 28 fromthe needle 62 when the knob 80 (FIG. 3) is rotated, which allows thesurgeon or the technician to selectively disengage the capsule 28 fromthe head 56 of the suture thrower 50. Some embodiments of head 56include mechanisms configured to linearly direct needle 62 out of needleexit port 123 across throat 132 and into cavity 134 for engagement withthe capsule. Other embodiments of head 56 include mechanisms configuredto shunt needle 62 (e.g., pitch needle 62 upward relative to axis A awayfrom needle exit port 123 and into cavity 134 for engagement with thecapsule).

FIG. 6 is a side view of one embodiment of the needle 62 aligned forengagement with the capsule 28 of the suture attachment assembly 24. Theneedle 62 is employed to form the opening in the tissue and the capsule28 is retrieved through the opening in the wake of the needle 62.

The capsule 28 is sized to be deposited and retained in cavity 134 (FIG.5) of the head 56 of the suture thrower 50 to position the through-bore156 to receive a leading end 158 of needle 62. In contrast to pointed,solid needles that are pushed through tissue, the capsule 28 is anannular tube segment having the through-bore 156 that configures thecapsule 28 to be captured by the needle 62 and pulled through an openingthat is pre-formed in the tissue by the needle 62. The structure of thecapsule 28 allows the surgically sharp needle 62 to form a uniformopening in the tissue with the desirable benefit of a minimum of tissuetrauma prior to engaging with the capsule 28 and retrieving the capsule28 through the opening. Thus, the structure of the annular capsule 28and the method of retrieving the annular capsule 28 through the openingin the tissue are counter-intuitive to the current approaches of drivingbullet-shaped suture ends through tissue.

The through-bore 156 is formed as a longitudinal bore extending thoughthe body of the capsule 28. In one embodiment, needle 62 is shaped topromote secure engagement with capsule 28 and leading end 158 is formedto have a conical point with a shoulder 162 that is sized to be pressedinto engagement with a flange 164 of through-bore 156. For example,flange 164 that is shaped and sized to frictionally engage (e.g.,snap-fit) in a “locked” manner with a shoulder 162 of needle 62 asneedle 62 is driven into through-bore 156. Capsule 28 is configured tobe detached from needle 62 by guide pin 130 (FIG. 5) after needle 62pulls capsule 28 rearward in a proximal direction into head 56.

The conical point of needle 62 is configured to form a channel openingwhen advanced through tissue, and capsule 28 is sized to be pulledthrough the channel in the tissue made by needle 62. In one embodiment,leading end 160 of capsule 28 is chamfered and needle 62 is configuredto draw the chamfered (or truncated) end 160 of capsule 28 first throughthe tissue. In one embodiment, leading end 160 of capsule 28 is a bluntend similar to that illustrated for the trailing end of the capsule 28,and needle 62 is configured to draw the blunt end 160 of capsule 28blunt end-first through the tissue.

For example, in one embodiment needle 62 has a first diameter D1 andcapsule 28 has a diameter D2, were diameter D1 is equal to or greaterthan diameter D2. In this manner, capsule 28 is sized to follow needle62 and be retracted through the channel formed in the tissue by needle62.

Leading end 158 of needle 62 is sized to frictionally engage withthrough-bore 156 formed in capsule 28. For example, in one embodimentleading end 158 has a diameter D3 that is slightly greater than aninside diameter D4 formed in an opening of through-bore 156. In thismanner, when leading end 158 of needle 62 is inserted into through-bore156, leading end 158 is forced into and seats within and capturescapsule 28.

In one embodiment, the inside diameter D4 of the through-bore 156adjacent to the leading end 160 of the capsule 28 is smaller than aninside diameter D5 of the through-bore 156 adjacent to the trailing end170 of the capsule 28.

In one embodiment, the capsule 28 is molded from plastic integrally overthe suture 26. Suitable plastic materials for fabricating capsule 28include polypropylene, polysulfone, urethane, or polyetherimide asexamples. Suture 26 includes monofilament suture, braided suture, coatedsuture materials or the like, as examples. In one embodiment, the suture26 is a monofilament polypropylene suture.

FIG. 7A is a perspective view, FIG. 7B is a front view, and FIG. 7C is aside view of one embodiment of the clasp 34. In one embodiment, theclasp 34 is thrilled as a single monolithic unit including a firstpaddle 200 connected to a second paddle 202 by a spine 204. Each of thepaddles 200, 202 of the single monolithic unit is formed to includesides 206, 208 that converge to a leading end 210 of the clasp 34 anddiverge to a blunt trailing end, or anchor 32, of the clasp 34. Theleading end 210 is sized to be wedged or pulled through the openingformed in the tissue by the needle 62 (FIG. 6), and the blunt anchor end32 of the clasp 34 is sized to prevent the clasp 34 from being retractedback through the opening formed in the tissue.

In one embodiment, the first paddle 200 includes a projection 212 thatis sized to frictionally engage with a recess 214 formed in the secondpaddle 202. For example, in one embodiment the first paddle 200 includesan exterior surface opposite an interior surface, and the projection 212projects from the interior surface of the first paddle 200. In a similarmanner, the second paddle 202 includes an exterior surface opposite aninterior surface, and the recess 214 extends between the exteriorsurface and the interior surface. The projection 212 is formed tofrictionally engage with the recess 214, for example by having adiameter that is slightly lamer than a diameter of the recess 214, toallow the first paddle 200 to snap-fit into engagement with the secondpaddle 202.

The clasp 34 is fabricated from a material that is suitable forimplantation into the human body. In one embodiment, the clasp 34 isfabricated from polypropylene. Other suitable materials for fabricatingthe clasp 34 include polyethylene, polymers in general, bio-absorbablepolymers, biodegradable polymers, or bio-resorbable polymers.

FIGS. 8A-8E are schematic views of embodiments of the suture thrower 50and the suture attachment assembly 24 employed to place an implantablefabric 22 into intracorporeal tissue.

Embodiments of the suturing device described herein provide a method ofsuturing tissue useful in many surgical procedures, including thetreatment of pelvic dysfunction including pelvic organ prolapse. Forexample, embodiments provide a suturing device suited for the surgicaltreatment of pelvic organ prolapse that is operable to suture a scaffoldor other support to a ligament or other tissue located within thepelvis. With some surgical procedures it is desirable to apply suturesto the sacrospinous ligament and/or the arcus tendineus ligament toattach a synthetic scaffold thereto that is configured to support thepelvic floor and reduce or eliminate the undesirable effects of pelvicorgan prolapse.

During an exemplary procedure, a catheter is placed in the patient'surethra and other recommended, desirable, or preliminary surgical stepsare taken in preparation for surgery. The patient is typically placed onan operating table in a lithotomy position with buttocks extending justbeyond an edge of the table. With the patient under anesthesia, avaginal incision (female) or a perineal incision (male) is made by thesurgeon. Thereafter, the surgeon would typically palpate the patient toidentify a desired landmark, such as the sacrospinous ligament or arcustendineus ligament or other tissue landmark. The surgeon identifies thelandmark, for example with a finger, and subsequently introduces sterileinstrument 50 and engages the throat 132 (FIG. 5) of the head 56 withthe identified landmark.

FIG. 8A is a schematic view of the throat 132 of the head 56 engagedwith tissue T. The needle 62 is retracted within needle exit port 123 ofproximal end portion 112 of head 56. Capsule 28 is seated in cavity 134with suture 26 trailing distally away from head 56. The head 56 has beenintroduced into an incision and the throat 132 of the head 56 is placedto engage a portion of intracorporeal tissue T, which positions theneedle 62 to capture the capsule 28 and pull the suture 26 through theintracorporeal tissue T. The intracorporeal tissue T includes softtissue in general, such as the Cooper's ligament, the sacrospinousligament, the arcus tendineus ligament, or other pelvic tissue.

In one embodiment, prior to throwing suture 26, it is recommended thatthe surgeon direct the trailing end 36 of suture 26 and clasp 34 overdistal end 64 of head 56 and back toward a proximal end of shaft 54 forease of managing suture attachment assembly 24 during, the procedure. Tofacilitate this, in one embodiment the distal end 64 of the head 56includes a slot configured to enable the suture 26 to pass throughdistal end 64 to facilitate loading/unloading capsule 28 into cavity134.

In one embodiment, rod 60 and needle 62 are aligned on axis A whenneedle 62 is retracted into proximal end portion 112 as illustrated, andcapsule 28 is aligned on an axis C that is not aligned with axis A.

FIG. 8B is a schematic view of the system 20 with the needle 62 pushedthrough the tissue to form an opening 215 in the tissue T. The needle 62is shunted away from longitudinal axis A by link 122 and pin 130, movedin a second direction along axis C by rod 60, and translated through theintracorporeal tissue to the distal end 64 of the head 56 for engagementwith the through-bore 156 (FIG. 6) of the capsule 28. Guide pin 130 hasrotated counterclockwise to allow the movement of link 122 within trace124 to shunt the direction of needle 62 out of alignment with axis A andinto alignment with axis C. Additional forward movement of rod 60 willfurther direct needle 62 across throat 132, through the intracorporealtissue T, and into engagement with capsule 28. As described below,needle 62 is reversible along the paths coincident with axis C and axisA to retract needle 62 and capsule 28 into needle exit port 123.

FIG. 8C is a schematic view of needle 62 retracted into head 56 withcapsule 28 parked in needle exit port 123 and the suture 26 thrownthrough the intracorporeal tissue T. In one embodiment, needle exit port123 is sized to receive capsule 28 such that port 123 forms a capsulegarage 123 into which capsule 28 is parked after extraction from cavity134. Rod 60 has drawn link 122 into full rearward engagement with trace124 such that needle 62 is aligned with axis A and retracted into head56. Capsule 28 is parked inside needle exit port 123 and suture 26extends across throat 132 and through the intracorporeal tissue T, whichconfigures the system 20 to allow the surgeon to pull the head 56 andthe capsule 28 out of the patient for subsequent manipulation of thecapsule 28.

In one embodiment, and as described above with reference to FIG. 2, knob80 is configured to be turned to incrementally retract rod 60 anadditional distance into handle 52, which separates needle 62 fromcapsule 28. For example, the additional retraction of needle 62 by therearward motion of rod 60 causes capsule 28 to be pressed against guidepin 130, which shears capsule 28 off of needle 62. Needle 62 is thusdisengaged from capsule 28 to allow the surgeon to manipulate thecapsule 28 free of the head 56 and outside of the patient's body.

FIG. 8D is a schematic view of the suture attachment assembly 24 engagedwith the intracorporeal tissue T. The capsule 28 and clasp 34 resideoutside of the patient's body in the suture 26 enters the patient's bodythrough the incision and disengaged with the intracorporeal tissue T.With reference to FIG. 7C, the surgeon may selectively attach the clasp34 to a desired location of the implantable support 22 by snapping thefirst paddle 200 into engagement with the second paddle 202 to captureimplantable support 22 between the paddles 200, 202. In this manner,pulling on the end of the suture 26 attached to the capsule 28 will pullthe implantable support 22 into a desired location within the patient'sbody.

FIG. 8E is a schematic view of the clasp 34 pulled through the opening215 formed in the intracorporeal tissue T by the needle 62 (FIG. 8B)until the anchor 32 is engaged with the back side of the tissue tosecure the implantable support 22 relative to the intracorporeal tissueT.

Embodiments have been described providing a method of intracorporeallysuturing tissue of a patient, where the method includes engaging thetissue with a suturing head 56 retaining a needle 62, forming an opening215 in the tissue T with the needle 62, passing a leading end of asuture 26 through the opening 215, securing a clasp 34 attached to atrailing end of the suture 26 to an implantable support 22, and pullingthe suture 26 and an anchor 32 that is attached to the suture 26 throughthe opening 215 formed in the tissue T, thus placing the implantablesupport 22 inside the patient.

In one embodiment, the clasp 34 is a tissue or a biologic body includingattached synthetic arms, where the clasp 34 assists in placing theattached synthetic arms into the patient and the synthetic arms includea portion of, or all of the implantable fabric 22.

FIGS. 8F-8I are schematic views of embodiments of the suture attachmentassembly 24 (as placed by the suture thrower 50 described above employedto place another implantable fabric 22′ into intracorporeal tissue.

FIG. 8F is a schematic view of the clasp 34 of the suture attachmentassembly 24 positioned for engagement with a sacrificial tab 216 thatextends from the implantable fabric 22′. The surgeon attaches the clasp34 to the sacrificial tab 216 of the implantable support 22′ by snappingthe first paddle 200 into engagement with the second paddle 202 (FIG.7C) to capture the sacrificial tab 216 between the paddles 200, 202. Theimplantable support 22′ is pulled to a desired location and implantedwithin the patient's body when the surgeon pulls on the end of thesuture 26 that is attached to the capsule 28. The suture attachmentassembly 24 and the sacrificial tab 216 of the implantable fabric 22′are both removed from the patient's body.

FIG. 8G is a side view of the sacrificial tab 216 portion of theimplantable fabric 22′. In one embodiment, the sacrificial tab 216includes tab material 217 that is attached to the implantable fabric 22′along a break line 218. In one embodiment, the tab material 217 issheathed in material 219 that is configured to assist in pulling thesacrificial tab 216 through tissue. For example, in one embodiment thesheath material 219 is a coating of a polyvinyl alcohol film that isapplied over the tab material 217 to provide lubricity between thesacrificial tab 216 and the tissue as the sacrificial tab 216 is pulledor placed in the tissue. In one embodiment, the entire sacrificial tab216, including the sheath material 219, is removed from the implantablefabric 22′ after implantation. However, any polyvinyl alcohol filmsheath material 219 that remains in the patient's body afterimplantation is configured to dissolve and be absorbed into thepatient's body.

FIG. 8H is a schematic view of the clasp 34 attached to the sacrificialtab 216 and pulled through the opening 215 that was formed in theintracorporeal tissue T by the needle 62 (FIG. 8B). The implantablefabric 22′ is secured or seated in the tissue T.

FIG. 8I is a schematic view of the clasp 34 and the sacrificial tab 216pulled through the tissue T and separated at the break line 218. Theimplantable fabric 22′ is thus implanted in the tissue T and the entiresuture attachment assembly 24, including the clasp 34 and thesacrificial tab 216, are removed from the patient and disposed of.

FIG. 9 is a schematic view of one embodiment of an attachment system 220configured to secure the implantable support 22 within a patient. Theattachment system 220 includes a suture capturing device 250 and asuture attachment assembly 254.

The suture capturing device 250 includes a needle driver 260 having adistal tip 261 spaced apart from a catch mechanism 262. The sutureattachment assembly 254 includes a needle 270 or a bullet 270 attachedto a leading end of the suture 26 with the clasp 34 attached to thetrailing end of the suture 26. The implantable support 22 is asdescribed above.

In one embodiment, the needle driver 260 is designed to place a slingtransvaginally by throwing the suture 26 through the Cooper's ligament,for example. The needle 270 is loaded into the distal tip 261 of theneedle driver 260, and upon activation of the needle driver 260 (forexample by an activation mechanism in a handle of the driver 260) thebullet 270 is delivered in an arc across the throat and retained withinthe catch mechanism 262. In this manner, the needle 270 and the suture26 are both thrown through the tissue and the needle 270 is retainedwithin the catch mechanism for retrieval to a location outside of thepatient's body. Thereafter, the surgeon attaches the clasp 34 to implant22, imposed a needle 270 the catch mechanism 262, and pulls the suture26 through the tissue to implant to support 22.

FIG. 10A is a perspective view, FIG. 10B is a front view, and FIG. 10Cis a side view of one embodiment of a clasp 294 suited for use with thesystem 20 and the suture attachment assembly 24 illustrated in FIG. 1.

In one embodiment, the clasp 294 is formed as a single monolithic unitincluding first paddle 300 connected to a second paddle 302 by a spine304. Each of the paddles 300, 302 of the single monolithic unit isformed to include sides 306, 308 that converge to a leading end 310 ofthe clasp 294 and diverge to a blunt trailing end 311, or anchor 311, ofthe clasp 294. The leading end 310 is sized to be wedged or pulledthrough tissue, and the anchor end 311 of the clasp 294 is sized toprevent the clasp 294 from being retracted back through the tissue.

In one embodiment, the first paddle 300 includes a projection 312 thatis sized to frictionally engage with a recess 314 formed in the secondpaddle 302. For example, in one embodiment the first paddle 300 includesan exterior surface opposite an interior surface, and the projection 312projects from the interior surface of the first paddle 300. In a similarmanner, the second paddle 302 includes an exterior surface opposite aninterior surface, and the recess 314 extends between the exteriorsurface and the interior surface. The projection 312 is formed tofrictionally engage with the recess 314 to allow the first paddle 300 tosnap-fit into engagement with the second paddle 302.

In one embodiment, the clasp 294 has a curved anchor end 311. Theleading end 310 of the clasp 294 is attached to the trailing end 36 ofthe suture 26, and each of the paddles 300, 302 is provided with acurved anchor end 311 having a pair of spaced apart prongs 316, 318.Each of the prongs 316, 316 is configured to engage with theintracorporeal tissue after the clasp 294 has been pulled through thetissue to ensure that the clasp 294 remains fixed at the implant siteselected by the surgeon.

FIG. 11A is a top view, FIG. 11B is a side view, and FIG. 11C is aperspective view of one embodiment of a clasp 324 suited for use withthe system 20 and the suture attachment assembly 34 illustrated in FIG.1.

In one embodiment, the clasp 324 is formed as a single monolithic unitincluding a first paddle 330 connected to a second paddle 332 by a spine334. Each of the paddles 330, 332 of the single monolithic unit isformed to include sides 336, 338 that converge to a leading end 340 ofthe clasp 324 and diverge to an anchor 341 of the clasp 324. The leadingend 340 is sized to be wedged or pulled through tissue, and the anchor341 is sized to prevent the clasp 324 from being retracted back throughthe tissue.

In one embodiment, the first paddle 330 includes projections 342, 343that are each sized to frictionally engage with a complementary recess344 formed in the second paddle 332. The projections 342, 343 are formedto frictionally engage with the recesses 344 to allow the first paddle330 to snap-fit into engagement with the second paddle 332 to capturethe support 22 (FIG. 1) there between.

In one embodiment, the leading end 340 of the clasp 324 is attached tothe trailing end 36 of the suture 26, and the anchor 341 is locatedbetween the leading end 340 and a trailing end 346 of the clasp 324. Inthis manner, when the suture is pulled through the opening 215 formed inthe intracorporeal tissue T (FIG. 8B) by the needle 62, the leading end340 of the clasp 324 will pass through the opening 215 and the anchor341 will become engaged with the tissue T. The trailing end 346 of theclasp 324 and a portion of the paddles 330, 332 will not be pulledthrough the tissue T. In other words, the anchor 341 is configured toengage with the tissue such that the leading end 340 projects out of oneside of the ligament, for example, and the trailing end 346 of thepaddles 330, 332 project out of the other side of the ligament. Thesupport 22 is consequently not pulled through the tissue. The clasp 324thus provides a mid-located anchor 341.

FIG. 12A is a top view and FIG. 12B is a side view of another embodimentof a suture attachment assembly 350. The suture attachment assembly 350includes the suture line 26, the capsule 28 attached to the leading end30 of the suture line 26, a clasp 354 attached to the trailing end 36 ofthe suture line 26, and arm anchor 352 that is attached to the sutureline 26 and separate from the clasp 354. The suture line 26 and thecapsule 28 are described above, and are employed to pull the anchor 352and the clasp 354 to an intracorporeal location within the patient'sbody.

In one embodiment, the anchor 352 is conical or bullet-shaped orconverges to a pointed leading end 356 that is configured to allow theanchor 352 to be pulled through an opening formed in the tissue. Atrailing end 358 of the anchor 352 is configured to be wider than theleading end 356 such that the anchor 352 prevents the leading portion ofthe suture attachment assembly 350 from being pulled back through theopening in the intracorporeal tissue. In one embodiment, the anchor 352is a conical anchor fabricated from polypropylene.

In one embodiment, the clasp 354 is configured to open and close andincludes a first paddle 360 attached to a second paddle 362 by a spine364. In one embodiment, spine 364 is provided as a “living hinge” thatallows the first paddle 360 and the second paddle 362 to flex relativeto the spine 364. In one embodiment, the first paddle 360 includes aprojection 370 projecting from an interior surface that is configured toengage with a recess 372 formed in the second paddle 362. The clasp 354opens wide enough to receive the implantable support 22 (FIG. 1) and thepaddles 360, 362 are configured to close down upon and engageimplantable support 22 to secure the support inside of the clasp 354.

During implantation, and as described above, the capsule 28 is pulled orthrown through an opening formed in the intracorporeal tissue by theneedle 62 (FIG. 6) and retrieved a location outside of the patient'sbody. The capsule 28 allows the suture line 26 to be pulled through theopening in the intracorporeal tissue to place the support material heldwithin the clasp 354 at the desired intracorporeal location.

In one embodiment, the anchor 352 slides along the suture 26. Forexample, during placement of the anchor 352, the anchor 352 is pulledthrough the opening formed in the intracorporeal tissue and thenmanually pushed along the suture 26 toward the clasp 354 to secure theclasp 354 at the desired intracorporeal location.

FIG. 13 is a side view of another embodiment of a suture attachmentassembly 380. The suture attachment assembly 380 includes the sutureline 26, the capsule 28 attached to the leading end 30 of the suture 26,and a plate 382 attached to the trailing end 36 of the suture 26. In oneembodiment, the plate 382 includes projections 384 formed along anexterior surface of the plate 382. The projections 384 are configured toengage with woven or nonwoven support fabrics that are suitable forimplantation into the human body. In this embodiment, the plate 382provides a clasp with one paddle, where the one paddle includesprojections that are configured to engage with threads or other portionsof an implantable body support.

Embodiments of a suture attachment system and assembly have beendescribed that allow a surgeon to secure an implantable support within apatient while offering improved implant management that is moreintuitive and accurate in placement and less complex and cumbersome.

Although specific embodiments have been illustrated and describedherein, it will be appreciated by those of ordinary skill in the artthat a variety of alternate and/or equivalent implementations may besubstituted for the specific embodiments shown and described withoutdeparting from the scope of the present invention. This application isintended to cover any adaptations or variations of medical devices asdiscussed herein. Therefore, it is intended that this invention belimited only by the claims and the equivalents thereof.

1. An attachment assembly configured to secure an implantable supportwithin a patient, the attachment assembly comprising: a length of suturehaving a leading end half terminating in a leading end and a trailingend half terminating in a trailing end; an anchor coupled to thetrailing end half of the length of the suture; a capsule attached to theleading end of the suture, the capsule having a through-bore extendinglongitudinally through the capsule; and a clasp attached to the trailingend of the suture, the clasp attachable to the implantable support. 2.The attachment assembly of claim 1, wherein the through-bore extendsfrom a leading end of the capsule to a trailing end of the capsule andan inside diameter of the through-bore adjacent to the leading end ofthe capsule is smaller than an inside diameter of the through-boreadjacent to the trailing end of the capsule.
 3. The attachment assemblyof claim 1, wherein the clasp comprises first and second paddles thatare attached to a spine, the clasp bendable at the spine to move thefirst and second paddles together to capture the implantable supportthere between.
 4. The attachment assembly of claim 3, wherein the firstpaddle has a projection that snap-fits into a recess formed in thesecond paddle.
 5. The attachment assembly of claim 1, wherein theimplantable support comprises a porous mesh and the clasp comprises aplate having at least one projection formed on an exterior surface ofthe plate that is configured to engage with a thread of the porous mesh.6. The attachment assembly of claim 1, wherein the anchor and the claspare thrilled as a single monolithic unit.
 7. The attachment assembly ofclaim 6, wherein the clasp has sides that converge to a leading end ofthe clasp and diverge to a blunt end of the clasp, the leading end ofthe clasp attached to the trailing end of the suture and the blunt endof the clasp comprising the trailing end of the anchor.
 8. Theattachment assembly of claim 6, wherein the clasp has a curved anchorend and sides that extend from the curved anchor end to converge at aleading end of the clasp, the leading end of the clasp attached to thetrailing end of the suture, and the curved anchor end including a pairof spaced apart prongs configured to engage the intracorporeal tissue.9. The attachment assembly of claim 1, wherein the anchor is separatefrom the clasp and movable along the length of the suture.
 10. Anattachment system configured to secure an implantable support within apatient, the attachment system comprising: a suture thrower comprising asuturing head housing a movable needle; and a suture assembly comprisinga length of suture, a capsule attached to a leading end of the suture,an anchor coupled to the suture, and a clasp attached to a trailing endof the suture, the capsule sized for retention within the suturing headand the clasp attachable to the implantable support; wherein the needleforms an opening in intracorporeal tissue prior to engaging with athrough-bore formed in the capsule and pulling the capsule through theopening to deliver the leading end of the suture outside of the patient.11. The attachment system of claim 10, wherein the suturing headcomprises a proximal portion housing the needle and a distal end spacedapart from the proximal portion by a throat, the distal end defining acavity sized to retain the capsule.
 12. The attachment system of claim11, wherein the needle is movable from the proximal portion of thesuturing head, across the throat and through tissue subsequent toengaging the capsule retained within the cavity of the distal end of thesuturing head.
 13. The attachment system of claim 12, wherein thecapsule is an annular tube having an axial bore formed through thecapsule and the needle is configured to snap-fit into the axial bore.14. The attachment system of claim 10, wherein the suturing headcomprises a distal end housing the needle and a cavity sized to retainthe capsule, the needle movable to engage the capsule and push thecapsule and the leading end of the suture through the intracorporealtissue.
 15. The attachment system of claim 10, wherein the needlecomprises one of a substantially straight needle and a curved needle.16. The attachment system of claim 10, wherein the anchor and the claspare formed as a single monolithic unit.
 17. The attachment system ofclaim 10, wherein the clasp comprises first and second paddles that areattached to a spine, the first and second paddles configured to coupletogether to capture the implantable support there between.
 18. Anattachment system configured to secure an implantable support within apatient, the attachment system comprising: a suture thrower comprising asuturing head housing a movable needle; and a suture assembly comprisinga length of suture, a capsule attached to a leading end of the suture,an anchor coupled to the suture, and a clasp attached to a trailing endof the suture; means for retaining the capsule in a distal end portionof the suturing head; means for passing the needle throughintracorporeal tissue before engaging the capsule with the needle; andmeans for retrieving the capsule and the leading end of the suture to alocation outside of the patient.
 19. The attachment system of claim 18,wherein the means for passing the needle through intracorporeal tissuebefore engaging the capsule with the needle comprises driving the needlefrom a proximal portion of the suturing head, through tissue, to thedistal end portion of the suturing head and into a through-bore formedin the capsule.
 20. The attachment system of claim 19, wherein the meansfor retrieving the capsule and the leading end of the suture to alocation outside of the patient comprises securing the needle and thecapsule within the proximal portion of the suturing head.
 21. Theattachment system of claim 18, wherein the means for retrieving thecapsule and the leading end of the suture to a location outside of thepatient comprises a sacrificial tab attached to the implantable supportalong a break line, the clasp attachable to the sacrificial tab, theclasp and the sacrificial tab removable from the implantable support.